• 2 May 2018

Transforming City Square in Waterford

Ireland’s oldest city has been through a major extension and revamp into a premier shopping destination.

The recently completed redevelopment has added 17,000 ft2 of two-storey anchor retail space facing Arundel Square and Peter Street Mall, a new food court and expanded units within the centre.

Our Dublin team were appointed by Bryant Park to provide civil and structural engineering design services from planning to construction. As Waterford is Ireland’s oldest city, historical preservation has been paramount throughout. The key design initiatives of the scheme were to keep the shopping centre fully operational during the demolition and construction works, and to mitigate the impact of the new development on the archaeologically sensitive zone.

Desktop studies and examination of previous archaeological excavations identified Viking archaeological remains dating back to the 11th century, including a bank to the west of the site which formed part of the defences of the medieval city.

Our team worked with architectural and archaeological consultants in consultation with National Monuments. We undertook an impact study to identify the most appropriate substructure strategy that would allow the development to proceed economically while preserving the existing archaeology in-situ. We created a 3D ground model which included all archaeologically sensitive layers and features, to allow us to examine and demonstrate various alternative foundation options, finally settling on a piled design using single CFA piles constructed at locations where they would have minimal impact on the archaeology.

We designed a lightweight steel frame with reinforced composite flooring to achieve low foundation loads, while maintaining a robust structural solution for the retail space. We also undertook strict vibration and movement monitoring throughout the works to ensure minimal impact to the existing structure but also to retailers. A number of existing retail units were modified and extensive façade upgrading work was carried out throughout the centre.

Our Senior Engineer, Anthony Byrne, commented: “It has been a privilege to be involved in this prestigious shopping scheme which has included major emphasis on preserving the architectural heritage for the city of Waterford.”  

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